Mack has a 49% better chance of developing the disease than the fraternal twins.
Most likely, Mack also has an increased risk of developing schizophrenia because identical twins share the same genetic code. However, Betty and Bonnie's risk of developing schizophrenia is not influenced by Mike's condition since they are unrelated to him.
Fraternal
(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.
Identical twins, due to the fact that the one fertilized egg splits, have identical DNA. Fraternal twins, since they are from separate eggs, have different DNA.
Identical twins are called monozygotic. Fraternal twins are called dizygotic.
FRATERNAL
Mack has a 49% better chance of developing the disease than the fraternal twins
Mack has a 49% better chance of developing the disease than the fraternal twins.
how does the genetic makeup of a fraternal and identical differ
identical
Fraternal
Fraternal
The words identical and fraternal are the opposites. These opposites can be compared to puppies and kittens or black and white for example.
Identical and fraternal twins typically share many similar characteristics
There is no precise percentage of fraternal or identical twins but it is estimated that 2/3 of all twins are fraternal where as 1/3 of twins are identical.
Quads can be identical, fraternal, or a pair of identical twins. Identical quads are rare- that would require 1 egg divide into 2, and then divide again into two. Most quads are fraternal.
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Identical twins come from the same fertilized egg; fraternal twins come from 2 fertilized eggs.